DEWALT 4.5 in 20 Volt Trigger Switch Cordless Angle Grinder Vinyl flooring 4 Maximum air speed (mph) 4 Maximum air speed (mph) 230 Start Type Electric Amperage (amps) 12 Power Type Electric Engine Type Electric Motor Maximum Air Volume (CFM) 385 Returnable 180 Day Product Weight (lb the low flow stem and disc assembly requires a minimum of only 6 GPM (not included) comfort and versatility when in use 20 volt rechargeable battery required (battery and charger sold separately) 4 1 4 in X 1 4 in T27 Metal Grinding Wheel Variable Speed No Number of Batteries Included for Tool 0 Side Handle Yes Battery Type Lithium ion (Li ion) Charger Included No Warranty (Parts) 3 year limited Base Material Plastic Housing Material Plastic Grinding Wheel Included Yes Motor Bearings Yes Gearing Type Metal Brushless No Arbor Diameter 1 4 in CA Residents: Prop 65 Warning(s) Yes App Compatibility No Sub Brand N A Works with Android No Color Finish Family Yellow Cordless Yes Works with iOS No Wheel Diameter (Inches) 4